CTC porcelain insulator doing the production by authorize different factories according to the different types of the insulator and all the insulator with CTC mark. CTC expert team evaluate the manufacturer from: Raw material; production process; testing.

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Porcelain line post, pin type insulator, 55-4, 55-3, 55-5, 55-6, 56-1, 56-2, 56-3, 56-4, porcelain thread pin type insulator, zinc thread porcelain pin type insulator, spool insulator ,strain porcelain insulator, porcelain disc insulator, flat shed disc insulator, fog type disc insulator, Aerodunamic disc insulator,Porcelain disc insulator with zinc sleeve

Porcelain line post insulator, 57-1, 57-2,57-3,57-4

Station post insulator, TR205, TR208……

Porcelain Hollow Insulator/bushing